[Object]The present invention provides a filtering apparatus, a sprinkling apparatus using the filtering apparatus, and a filtering method by which a state where filtering sections are not clogged can be maintained by filtering out foreign matter such as water scale during continuous water feeding and cleaning and discharging the filtered-out foreign matter at each timing of restart of water feeding, and weakening and unexpected stoppage of water jetting due to foreign matter clogging the filtering sections can be prevented.[Solution Means]A filtering apparatus A includes a liquid passage chamber 1 including a control panel 11 provided with a liquid lead-in port 10 into which a flowing liquid flows, and liquid passage holes 110 and 111, and an initial moving plug body 12 that closes the liquid passage hole 110, 111, a drainage chamber 2 provided to be continuous with the liquid passage chamber 1 and including compartment chambers 20 and 21 provided corresponding to the liquid passage holes 110 and 111, and following plug bodies 24 and 25 that close drainage ports 22 and 23 formed in the compartment chambers 20 and 21, and a recirculation chamber 3 that is provided to be continuous with the drainage chamber 2, and has filtering sections that communicate with the compartment chambers 20 and 21 and filter a flowing liquid.
